upon occasion的意思|示意
不时地，必要时，有机会时
upon occasion相关短语
1、 Restricted parking upon occasion 活动期间的限定停车场
2、 upon every occasion 一有机会
3、 once upon an occasion full 昔时
upon occasion相关例句
An ubiquitous virus, encephalomyocarditis, has been demonstrated upon occasion to affect swine.
曾经证实一种到处有的病毒-脑心脊炎病毒——偶尔侵害猪。
The decision of studying abroad was made upon occasion. I chose Germany because the Germans are very strict and the Universities here are fee-free.
决定留学缘起偶然，而选择德国是因为这里的大学当时免费，以及德国人理性，严谨的做事态度。
You can be somewhat reserved and self-centred and show great obstinacy upon occasion.
你可能有点拘谨和自我中心的，必要时会非常顽固。